Method for preparing spherical nickel-cobalt lithium manganate material

The invention discloses a preparation method of spherical nickel cobalt manganese acid lithium which takes the carbonate as a precipitant by adopting a coprecipitation method. Three solutions of metal iron of nickel cobalt manganese mixed metallic salt solution with certain concentration as well as carbonate solution and ammonium salt solution are respectively continuously added into the reactor. The flow rate is controlled until the pH value of the reaction solution is 7.9-8.5. In the solution, the concentration of the NH4 is 0.1mol/L-0.5mol/L and the reaction temperature is 45 DEG C-60 DEG C. The spherical precursor body material is prepared. A preheating treatment is carried out and the spherical precursor body material is then evenly mixed with the preheating treatment for the heating treatment to obtain the finishes product. The precursor body of the invention has a fast speed of being formed into a sphere and the particle size is evenly distributed with advantages of good sphericity, higher concentration and higher capacity.